At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 70,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World to soldiers’ letters from World War II and Vietnam. Explore primary sources, visit exhibitions in person or online, or bring your class on a field trip.

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National History Day Resources

National History Day® engages more than half a million students around the world to conduct historical research on a topic of their choosing and then enter these projects at the local and state/affiliate levels, with top students advancing to the National Contest at the University of Maryland at College Park.